mergenthaler



(No Model.) 5 Shets-Sheet 1.

0. MERGENTHALER. MACHINE FOR CASTING STEREOTYPES- INVENTOROllmaTJlWiugkn W OKLA 0 ATTORNEY (No Model.) 7. ,5 Sheets-Sheet 2., O.MERGENTHALER.

MACHINE FOR CASTING STEREOTYPES.

No. 347,818. Patented Aug. 24, 1886.

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w 015m m enzimkr N PETERS Phm-Limn n har, Washinglom Dac.

(No Model.) I 5 Sheets-Sheet 3* O. MERGENTHALER.

v MAGHINE FOR CASTING STEREOTYPES. No. 347,818. Patented Aug. 24, 1886.

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(N0 Model.) 5 Sheets-Sheet 4..

O.' MERGENTHALER. MACHINE FOR CASTING STEREOTYPES.

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(No Model.) 5 Sheets-Sheet 5. 0. MERGENTHALER.

MACHINE FOR'GASTING STEREOTYPESQ No. 347,818. Patented Aug. 24, 1886.

mmasas, lnveidor Oljmar dlfl yenikaleze 022 W UNITED STATES PATENTOTTMAR MERGENTHALER, OF BALTIMORE, MARYLAND, ASSIGNOR, BY MESNEASSIGNMENTS, TO THE NATIONAL TYPOGRAPHIG COMPANY, OF WASHINGTON,DISTRICT OF COLUMBIA.

MACHINE FOR CASTING STEREOTYPES.

SPECIFICATION forming partof Letters Patent No. 347,818, dated August24, 1886.

Application filed June 16, 1883. Serial No. 98.269. (No model.)

i relates in natural order to the subject-matter of applications forLetters Patentofthe United States filed by me upon the 15th day ofMarch, A. D. 1883.

The general object of my former inventions being to produce the matrixfor a stereotypemold by successive type-impressions upon a strip ofplastic material in intaglio, my present invention has for its object,first, to provide automatic mechanism for casting separate single-linestereotypes so constructed that they may be locked up in a chase andused upon a press, like so many sticks of type; second, to provide anautomatically-separable mold having its bottom closed by the matrix andadapted to move toward discharge spouts or nozzles to receive the cast,and to open and separate therefrom to discharge the moldedstereotype-block; third, to combine with an automatically opening andclosing mold mechanism for locking its separable parts in position toreceive the flow, and for unlocking the same to permit the removal ofthe casting; fourth, to combine with a reciprocating mold a plateclosing its upper side intermediate between it and the dischargeopeningsfor the molten metal, and having orifices registering with saidopenings, through-which the metal may enter the mold, said plate beingautomatically separated from the mold and from the discharge-nozzlesbetween each flow; fifth, to provide said intermediate plate withdevices for holding and withdrawing the casting from the mold as thelatter opens and recedes and for sustaining said casting when whollyremoved; sixth, to combine with an automatic mechanism a separable mold,a matrix closing the bottom of said mold, devices for reciprocating ittoward and from discharge-nozzles communicating with a well of meltedtypemetal, and apparatus for forcing said metal at stated intervals intothe mold; seventh, to

successively into the bottom of the mold, and.

devices for locking the separable parts and advancing the mold toreceive the flow of 6 melted metal; ninth,to provide a mold for eastingsingle-line stereotypes, having a separable plate closingits upper side,provided with orifices for the admission of the melted metal andintermediate recesses of exactly equal depth for forming a true bottomto the stereotype block or casting; tenth, to combine with thereciprocating mold and the discharge-nozzles an intermediate platehaving orifices registering with said nozzles and provided with aseparable protectingplate of mica or similar material; eleventh, toprovide positive mechanism whereby the operation of the devices forretracting the mold and discharging the casting therefrom is renderedcertain; twelfth, to combine, with a well containing melted typemetaland having a dischargechannel leading to the mold a plunger having anautomatic valve, which opens to admit metal to a plunger-chambercommunicating with the dischargeopenings and mechanism for operatingsaid plunger at stated intervals to force the melted metal through thedischarge-channel into the mold; thirteenth, to provide an automaticapparatus in which melted stereotype metal is forced at stated intervalsinto a reciprocating separablemold, and having devices which advancesaid mold to the discharge-nozzles, locking its parts together toreceive the flow of metal, and which open the mold and withdraw it, thecasting being removed during thelatteroperation; fourteenth, to produceby automatic mechanism a series of stereotypes or stereotype-blocks,each representing a single line of justified type, and

having supporting-lugs formed upon their bottoms during the operation ofcasting, and affording a true support for each block when placed uponthe imposing-stone.

To these ends my invention consists, essentially, in the severalmechanical combinations and in the novel features of constructionhereinafter described, and shown in the drawings forming part of thisapplication, in which- Figure 1 is a central vertical section takenlongitudinally through the machine, illustrating the general arrangementand relation of the essential parts. Fig. 2 is a plan view of the frontend of the machine shown in Fig. 1. Fig. 3 is a vertical sectionenlarged,showing a portion of the apparatus illustrated in Fig. 1,consisting of the discharge-nozzles, the separable mold, theintermediate plate with de vices for withdrawing and sustaining thecasting, and the matrix with its feeding mechanism. Fig. 4 is a top viewof the parts shown in Fig.3. Fig. 5 is a detail perspective of the partscomposing the separable mold with the oar for locking said partstogether, the several members being separated for purposes ofillustration. Fig. 6 is a vertical longitudinal section of the partsshown in Fig. 5, assembled. Fig. 7 is a detail perspective showing theplate intermediate between the mold and the discharge-nozzles, with itsdevices-for withdrawing and sustaining the casting. Fig. 8 is a detailperspective of the same part, taken from the opposite side of the plateand showing the separable protect-ing plate. Fig. 9 is a perspective andtransverse section showing a modified form of construction of the plateillustrated in Figs. 7 and 8. Fig. 10 is a perspective view of one ofthe actuating-cams upon the main shaft of the machine detached. Fig. 11is a detail perspective of a cam-arm rigidly mounted upon the main shaftfor insuring the action of mechanism which withdraws or retracts themold. Fig. 12 is a detail perspectiveof a cam which actuates the plungerfor forcing the melted metal into the mold. Fig. l3isa detailperspective showing one of the cams which actuate the rock-shafts bywhich the mold is reciprocated, the shaft engaging with said cam, theelbow-lever for unlocking the mold and its actuating cam. Fig. 14 is adetail perspective showing the friction-wheel mounted upon thefly-wheel, and bearing upon the angular extremity of the rock-shaft toinsure its engagement with the cam in withdrawing or retracting themold.

The purpose ofthepresent invention istoproduce stereotypes from matricesformed byatypographic machine, thereby avoiding the large expense forfonts of different type and the labor of the compositor, which arerequired by the methods heretofore in use. To this end I have shown anddescribed in my former applications mechanism for producing upon aplastic surface successive type -impressions, having a properarrangement and spacing and formed in a single line or narrowstrip,wl1ich may be divided afterward into any numberof I order of theirarrang ment.

lines of equal length, and which I propose to mount upon a pliablefoundation in any suitable manner,with a suitable interval between theadjacent strips, the latter being adapted to serve as matrices for astereotype-mold, with which they are caused to engage in the In thismanner I produce a separate stereotype of the typeimpressions in eachseparate strip, or, in other words, of each line of justified matter,

said stereotype being in the form of a solid block, which is type highwhen locked in a chase, and having such dimensions that any desirednumber of them may be arranged in consecutive order, and when in formused it pon a press in the usual manner.

The present application is confined to the mechanism for casting thesesingle line stereotype-blocks.

A in the said drawings indicates the framework of the machine, in whichthe operative parts are supported. In the upper portion of this frame isarranged a reservoir, B, containing stereotype metal in a molten condi'tion, the heat necessary to produce fusion beobtained from a furnace. O,beneath said reservoi r, having a fine, 0', for the escape of theproducts of combustion, and provided with inclosingwalls with suitabledoors to give access to the fire-chamber.

In front of the reservoir B is placed a well, D, having its top in thesame plane with the bottom of the reservoir, and heated by the samefurnace, O. This well is supplied with melted metal from the reservoirthrough a discharge opening, b, which is automatically closed and openedby a plug-valve, b, lying within the reservoir and having its stemprojecting through the opening b. To the end of this valve stem isconnected one arm of a bellcrank lever, b, pivoted to a bearing upon theframe, and having its other end connectedby a link-rod, I), to a float,b, within the well D. As melted metal is discharged from the reservoirinto the well, this float is lifted, raising the arm of the bell-crankto which it is at tached, and drawing down the opposite arm, whereby thevalve 1) is seated in the dischargeopening and further escape of metalis arrested. By these devices the melted metal in the well D isconstantly retained at the same depth. The quantity of metal containedin said well may be varied by means of the pivotal adjustment of thelink-rod upon the arm of the bell-crank b". The upper end of said linkis provided wit-h several equidistant perforations, whereby the floatmay be set higher or lower with relation to the lever b", therebyallowing the metal to rise to a-higher level in the well before thevalve is closed in the reservoir 13..

Within the well D is placed a plunger, D, packed through a metallicdiaphragm, d, in the bottom of the well, by which the latter isseparatedfrom a plunger-chamber, D, below it. The plunger,which isreciprocated verti cally in said chamber, has aguide-rod,d', mov- IFSing in a guide-yoke. D, and is provided with a central channel, 01*,extending upward from its bottom to a point above the diaphragm d, whereit opens into a transverse channel, (1, which pierces the wall of theplunger. A valve, (1, closes against the lower open end of the channeld, and has a stem. (i traversing said channel with apin inserted in itsend and entering the transverse channel d As the plunger D rises in thechamber D", molten metal from the well D flows through the channels dand d into the plunger-chamber, the valve d dropping until it hangs bythe crosspinin its stem from the channel d. \Vhen the plunger movesdownward, however, the pressure of the metal in the chamber closes saidvalve, and prevents the metal from being forced back through thechannels by which it has entered.

E indicates a channeled septum, forming the front inclined wall ofthewell D,and having its inner passage communicating with the lower part ofthe plunger-chamber D". This channeled wall,like the remaining partsofthe well, may be constructed of cast-iron; but at its upper edge isattached a cap, E, of some metal which is agood conductor of heat, suchas copper. This cap has an obliquechannel, e, forming a continuation ofthe channel in the septum E, and leading to discharge-nozzles 6, formedupon the front inclined face of the cap E. The latter, which is securedto the septum E by screws passing through its ends, as shown in Fig. 2,is coextensive with the top of the wall upon which it is mounted, andthe dischargenozzles are arranged upon its face at equal intervals, asillustrated in Fig. 4. Each ofthese nozzlesis pierced by a small centralopening, 6, (see Fig. 3,) through which the melted metal is driven bythe descent of the plunger D.

Upon the forward end of the frame A are placed supports A, inclinedtoward the chan neled wall E, and forming a right angle therewith. Thesesupports, which extend nearly but not quite to the outer face of thewall E, rest upon a plate, A which is bolted to the end of the frame A,as shown in Fig. l, and they support the reciprocating mold F, theconstruction ofwhich will first be described. The separate partscomposing this mold are shown in Fig. 5 detached from each other and inFig. 6 assembled. Themold proper is composed oftwo halves-an upper, F,anda lower half, F". Its ends are formed by an offset or shoulder,f,formed upon one end of the upper half, and a corresponding offset, f,formed upon the opposite end of the lower half, F. Upon the latterportion are placed two studs, f f -one at each endwhieh engage withapertures f f in the upper half. These st ads are arranged one upon theotfsctf upon the lower half and the other in position to enter theaperture formed in the offset f upon the upper half. They are thusremoved beyond the end walls of the Inold,and the upper half, which isplaced thereon, is guided and held in proper position relatively to thelower half, F The studs f 2 project above the top of the part F, as seenin Fig. 6, and near their ends notchesf are out upon opposite sides ofeach stud,and running longitudinally with the mold. The upper edgeofeach notch is slightly inclined downward, and a bar, F, is placed uponthe upper halt'of the mold, having slots f f enlarged at one end, asshown in Fig. 5, which receive the notched ends of the studs, theoppositeedgesof each slot lying within the opposite notches in eachstud. The lower face of the bar F lies flat upon the part F, its uppersurface being throughout a space coextensive with each slot f slightlyinclined by cutting the metal away, as shown in Figs. 5 and 6. Thisinclination corresponds with the inclination of the upper edges of thenotches f in thestuds. It will be seen that by moving the bar Flongitudinally the upper and lower parts ofthe mold may be locked firmlytogether, or by movement in the opposite direction may be'released insuch manner as to allow them to separate slightly, for a purposehereinafterset forth. The length of the moldsections F and F is a verylittle less than the distance between the inner edges of the inclinedsupports A A, and they are supported upon thelalter by pins or st udsff,projecting laterally from the ends of the lower half, F", and restingupon said support, as seen in Figs. 3 and 4. lt will be seenthat whenthe two sections are placed together, as in Fig. 6, they form the sideand end walls of a rectangular mold, the top and bottom thereof beingentirely open.

In'front of the mold F is arranged amatrixsupportingbloc'k,G,haviugalength equal tothe length of themold-sections and of about the thickness of both. It is connected withthe lower mold section,F ,by means ofarms or barsgg, formed upon itsends parallel with each other and with the end walls ofthe mold. Thesebars, which are square, lie in rectangular recesses f f, formedintheends ofthelowcr mold-section, F and at the lower angles thereof. Eachbar g is provided with a longitudinal slot, 5/, which receives a pin, g,having a threaded end engaging with a threaded perforation in therecessed end of the part F The slots g are reamed upon the outer facesof the bars 9, to permit the heads of the pins to lieiiush therewith.

Upon the lower faces of the bars a Slltll] distance from theirextremities, are placed downwardly-projecting pins 9 which have bearingupon the extremities of a leaf-spring, f centrally attached to the lowersurface of the mold-section F and which normally tends to draw thematrixblock G toward the open bottom of the mold. Upon that face of theblock G which is adjacent to the mold F is formed a longitudinal portionorstripp, projecting from the face of the block, having a width equal tothe distance between the side walls of the mold, and so located that ifthe block G were moved against the mold said projecting portion wouldclose its open hottom without entering between the side walls. Near eachend of said strip is placed a pin, 9 projecting forward, by which themovement of the matrix block toward the mold is limited.

Upon each inclined support A is placed a bracket or lug, A", whichlimits the movement of the mold F as it recedes from thedischargenozzlesby the pins f upon the lower moldsection coming in contact with the endsof the brackets. The matrix block G is, however, permitted a stillfurther movement, and being drawn downward between the inclined supportsA it is separated from the mold against the tension of the spring funtil the parts are in the relative position shown in Fig. 3. Thepurpose of this separation is to permit the advance of the matrix whichis suspended between the matrix-block G andtbe open bottom of the mold.

H indicates the said matrix, whichis formed in the following manner:Upon asheet ot'heavy card-board or other suitable material are glued orotherwise fastened border-stripshh, having a thickness equal to that ofthe separate strips of which the matrix is composed. Between thesestrips, which are arranged longitudinally, are placed transversely theseveral plastic strips, h, which have received the propertypeimpressions in the manner set forth in the other applications filedby me heretofore. These strips are fastened to the board in any suitablemanner, a proper and regular interval, it", being left between them. Theimpressed strips h are each a little larger than the distance betweenthe end walls ot'the mold, and a little wider than the thickness of thelatter; but the type impressions upon said strip are \l holly confinedto the space represented by the open bottom of the mold. The matrix thusformed is suspended'between the matrixblock G and the mold F, restingagainst the projecting strip 9 and between the pins 9 When firstintroduced,the lower strip is placed opposite the mold, the matrix beingfed downward, by devices hereinafter described, in such manner that saidstrips h may be caused to engage with and close the bottom of the moldin the manner following: Upon the rear face of the upper and lowersections of the mold are formed lips 1 2, respectively, having a lengthequal to that of the strips h, and separated from each other, when themoldis closed, by a distance equal to the width of the strip. These lipsare adapted to enter the intervals between said strips as they arearranged upon thecard-board, and as the matrix is carried toward themold, and asthelatter closes, they guide the strip which lies betweenthem into such position that it closes the bottom of the mold and placesthe impressed or indented portion in position to form the matrix whenthe cast is made.

Between the mold F and the discharge-nozzles e is placed acooling-plate, I, mounted upon carriers 1' i, which slide in the head orcap E, allowing the plate to approach and recede from the dischargeopenings, the latter movement being caused by a spring, 2'', hearingagainst one or both of the carriers i. The plate I, which is shown indetail in Figs. 7 and 8, is formed of steel, with orifices t"registering with the openings in the discharge-nozzles e, and its rearface is cupped or concaved slightly around each opening. Adjacent tothis face is placed a separable plate, I, of mica, or similar materialcapable of resisting great heat, said plate having openings 1*,corresponding with those in the plate I. The latter covers the top ofthe mold when it is in position for the cast, and the metal passes fromthe dischargenozzles through it into the mold.

Upon the front face of the plate I. and between its ends, are formed twoprojecting lugs, 6%, each having a notchfl", cut in its inner edge, thesides of said notch diverging up ward. Each lug is of the same thicknessas the casting to be formed in the mold, and when the latter is inposition to receive the melted metal said lugs project within the top ofthe mold, and the casting is formed around and in the notches ofthelugs. The purpose of these features is. that as the mold is withdrawnafter the cast the notched lugs will withdraw the casting from the moldand will sustain it, as shown in dotted lines in Fig. 3, whence it maybe removed by simply turning the lower edge of the bar upward until itis disengaged from the notches t These notches are tapered in suchmanner and to such extent that the casting of soft metal may bedisengaged by the turning or tipping motion, notwithstanding the factthat its upper edge is seated in the recesses i, hereinafter referredto.

Referring to Fig. 7, it will be seen that upon the face of the plate I,and between the dis charge-orifices i, are formed recesses 1", havingtheir curved side in the longitudinal line of the plate, and being ofexactly equal depth throughout the series. The purpose of thisconstruction is to give a true support to each single-linestereotype-block, for y the reason that. as melted metal is forced intothe mold F through the orifices i, it has been found that the castingwill have formed upon its bottom opposite each discharge-nozzle eitherslightly-concaved depressions with a projecting fin of metalsurroundingeach, 0r teats of unequal length. In trimming off theseprojections not only is much time and labor expended, but thetrimming-tool may cut away the metal of the block, and therebyproduce anuneven bearing-surface, which, when placed upon the imposing-stone, willnot give a true type surface. As these recesses i are located betweenthe said orifices,and as they formlugs upon the bottom of each castingof exactly equal height, no .trimming ot'the block is necessary, aseachwill, when placed upon the imposing-stone, support the stereotype-facetype-high and in position to be locked in the chase.

By interposing between the discharge-nozzles e and the mold F theintermediate plate, I, with its separable protecting-plate I, both beingantomatiealiy separated from the discharge-nozzles and from the mold, Iam able to retain said plate at such a temperature as to avoid itsinjury by overheating, since between each east the mold is withdrawn andthe intermediate plate, I, is separated from it, as well as from thedischarge nozzles. thereby allowing a certain interval during which theplate may cool to a certain degree.

The matrix-block G is reciprocated toward and from the discharge-nozzles6' upon theinclined supports A by arms K, which are mounted upon theends of rock-shafts L and L. Each of these arms (shown in Fig. 2, and indotted lines in Fig. 4) is connected bya link, L", with an end of thematrix-block G, both arms having, by the rocking of their shafts L andL, radial movement, whereby said block G is carried up upon the inclinedsupports A, and then, by the return movement of said arms, retracted.

I will first describe the arrangement of parts whereby the matrix H isadvanced at stated intervals, bringing the transverse strips hsuccessively into engagement with the bottom ofthe mold, and will thenproceed to describe the mechanism whereby the parts hereinbeforementioned are actuated. Referring t Fi 1, 3, 4, and 5, itwill beseen'that upon the upper mold-section, F, I attaehstandards f, one uponeach end of said section, and having each an eye in its end, in whichisjonrnaled a weighted suspending-plate, M, provided at each end withnibs m, which may enter the space between the strips h. This plate isoverbalanced by a weight, m, placed be hind the pivot-bearings f of saidplate, said weight being adapted, when the plate is not otherwise actedupon, to tilt the latter device upward until its movement is arrested bythe head of a set-screw, f centrally mounted upon the locking-bar F, asshown in Fig. l. The matrix H hasa weight, N, attached to its lower end,and when the nibs m of the plate M engage with the matrix the plate isdrawn or tilted downward until it rests upon the locking-bar F", asshown in Fig. 3. In this position its nibs support the matrix H in suchmanner that one. of its strips h is directly in front of the bottom ofthemold F. Upon the sides of the frame A are two forwardly-projectingarms, A*A*, having their extremities carried toward the front somedistance beyond the iarthest point to which the nibs of the plate M arecarried when the mold is moved up to receive the cast. Behind thematrix, and centrally mounted upon the matrix-block G, is a spring, 0,having its ends extending laterally and bearing against the back of thematrixboard. By reference to Figs. 1 and 3 it will be seen that as thematrixblock G and mold F are moved forward toward the discharge nozzlesc the matrix will be carried with the block G until that portion abovesaid block strikes against the immovable arms A. Vhen this takes place,the plate H will bend backward, as shown in Fig. 1, and will be therebywithdrawn from the nibs m of the supportingplate. The moment this takesplacethe weight m tilts the plate M upward until its motion is arrestedby the head of the set-screw f In this position the nibs oft-he plateare in place to engage with the interval it next ensuing. and as thematrixblock G recedes the spring Owill throw the matrix H forward untilsaid engagementis effected. The simplicityof this arrangement dependsupon the fact that as the matrix-block G moves toward the bottom of themold F the latter remains stationary until the lips 1 and 2 upon theupper and lower mold-sections have made their engagement with the twointervals If upon each side ofthe strip which is to close the bottomofthe mold. After this engagement is perfected the parts move onwarduntil the arms A* push the matrix out of engagement with thesupporting-plate M, and allow the latter to to tilt upward, in readinessfor its next engagement with the said matrix. As the latter is, duringthis disengagement, held between the matrix-block and thelipped mold,the support ofthe plate is not required. As the parts recede and theplate again comes into engagement with the plate M, the matrixblockseparates from the mold F,by reason of the pinsf upon the lowermold-section coming into contact with the ends of the brackets A Thisreleasesthe matrix H from the lips of the mold-section, whereupon theweight N, attach ed to the lower end of the matrix, drawsit downwarduntil its supporting-plate M strikes the top of the locking-bar F when,its movement being arrested, it sustains the matrix in position to closethe bottom of the mold with the nextsucceeding strip h. In this manner,as will be seen, after each cast the matrix is automatically advanced asingle step, and thereby placed in position to be brought intoengagement'with the mold for the succeeding cast.

Having thus shown the construction of the two-part mold, the matrix withits feeding devices and support, and the apparatus for supplying meltedtype-metal to the mold at stated intervals, I will briefly describe theoperation of these united parts withoutregard to any special actuatingmechanism, which will be described hereinafter. Referring to Fig. 3, itwill be seen that the mold F has opened and receded from thedischarge-nozzles c,the casting being withdrawn and sustained by thenotched lugs #2, as shown in dotted lines. The open mold having beenarrested in its retrograde movement by its pinsf coming in contact withthe lugs A, the matrix-block G has receded from the mold, releasing thema trix H from its engagement with the lips 1 and 2, and allowing it todrop a single step, when its motion is arrested by the snpportingplateM, striking the locking-bar F. The casting having been removed from thenotched lugs '5 the operation of the parts begins with the advance ofthe matrix block G, carrying the ICC matrix H toward the bottom of themold,the spring behind it being compressed by the thrust of thesupporting-plate M, thereby bending the matrix over backward and givingprominence to the strip which is to engage with the mold. Themold-sections F and F during this movement are motionless, being held toawait the approach of the matrix by the leaf-springf which bears againstthe pins [0 y" upon the slotted bars 9. As the matrix reaches the bottomof the mold,and just before the strip it closes said bottom, the lips 1and2 engage with the intervals it above and below the strip and guide itinto its true position.

An instant later the strip is brought against the bottom of the mold bythe pressure of the supporting-strip 9* upon the matrix block,and

at the moment this engagement is made the locking-bar F is actuated, thetwo parts of the mold are forced tightly together, and simultaneouslytherewith the said mold begins to move upon the inclined supports Atoward the discharge-nozzles. Just before reaching and engaging withthem the matrix H is brought into contact with the arms A, by which itsupper part is bent still farther back against the tension of the spring0, the nibs m of the plate M are withdrawn, and the side plate tiltsupward until arrested by the head of the screw f Just previous to thisthe top of the mold has reached the intermediate plate, I, the notchedlugs i having entered the top of the mold, and by a short movementfarther the plate is brought against 5 the nozzles e and is held againstthem with Sufiicient pressure to make a close joint. At this moment theplunger D, which has in the meantime been raised, admitting metal to theplunger-chamber D descends, driving the melted metal from said chamberthrough the channeled septum E, the copper head 11/, and throughthedischarge-nozzlescand the pierced plate I, into the mold F. As themolten metal enters with force,it is projected in jets against 5 thematrix h throughout its length, forming a cast of type-impressions andthe body of the stereotype-block, and depositing the fused typemetalupon the matrix-strip simultaneously at each point. The stroke of theplunger is adjusted to such a length that its descent will completelyfill the mold. The moment the cast is madethe locking-bar F is thrownout.- ward, releasing the mold-sections and allowing them to separate topermit the withdrawal of the casting as the mold recedes. As thisretrograde movement begins, the intermediate plate,f,accompanies themold ashort distance and then stops, the carriers 6 '13 being arrestedby the head or cap E. The mold continuing to move, the matrix leaves thearms A,and is by the spring 0 thrown forward into engagement with thenibs of the plate M. The casting is drawn from the mold, and as thesupporting-pinsf of the latter reach the brackets A its movementisarrested. The-matrix-block G separates from the bottom of the mold andis carried into the position shown in Fig. 3,

and as the separation is effected the matrix H, being released from thelips I and 2, is carried down by the weightN until its motion isarrested by the plate M, in the manner already described.

I will now proceed to describe the mechanism by which the plunger D isoperated. as well as that which advances and retracts the matrix-block Gand themold F and locks and unlocksthe separable sections of the latter.Referring toFigs. 1, 2, 3, and 4, L I. represent link-bars pivoted nearthe ends of the matrixblock G and to lever-arms K K, mounted upon theends of rock-shafts L L, one upon each side of the machine, said shaftsbeing each supported by an upper and a lower bearing, 1 and 5,respectively. These shafts are rocked simultaneously in their bearings,and in opposite directions, to throw the leverarms K radially outwardand inward, as in dic'atedin dotted lines in Fig. 4. The construction ofthe operating devices of each shalt being somewhat different, they willbe described separately. Upon the lower end of the rock-shaft L isformed an arm, I, (shown in detail in Fig. 13.) at an angle with theaxis of the shaft, and having an inwardly-projecting end, I", in whichis jonrnaled a frictionroll, 1*. This roll has bearing upon adisk, N,upon the main shaft, the face of said disk being divided into theseveral cam-surfacesn, a, and it, having such relation to each otherthat when the roll rests upon the surface n the arm K will be thrownoutward in the position in dicated 'in Fig. 4, whereas when the rollrests upon the surface it the arm K will be turned inward, as shown inFig. 2. The purpose of the intermediate cam-surface, n, will beexplained "shortly. The rock-shaft L upon the opposite side is operatedby an angular arm, l also provided with a friction-roll, l, which bearsupon adisk P, (see Fig. 10,) having camsnrfacesp p 1), correspondingwith those upon the disk N. This disk P issbown in Fig. 10. It will beseen from Fig. 2 that the arm I, instead of being carried upward andbackward, like the arm I, is extended forward and downward, and for thisreason the cam-surfaces of the disks N and P are both faced in the samedirection or toward the same end of the main shaft, and are so arrangedor timed with relation to each other as to give an actly simultaneousaction to each shaft L and L. The main shaft which carries the disks Nand 1, being rotated, the rolls l and l ride from the surfaces n and 1),respectively, upon the surfaces 11. and p, where they remain while theshaft revolves a part of a revolution, represented by the length of saidsurfaces as compared with the entire circumference traversed by saidrolls. This causes a partial revolution of the shafts Land L, bywhichthe leverarms K are swung inward far enough to advance thematrix-block G up to the bottom of the mold and bring the strip hagainst it, causing the lips 1 and 2 to engage with the intervals h", asalready described. During IJO the time the rolls Z and Z are riding overthe (am-surfaces named the shafts L L and their arms K remainmotionless, and during this interval the locking-bar F is actuated bymechanism presently to be described, and the two parts of the mold arethereby locked together with the matriX-strip, closing the bottom of themold. The shalt having now revolved until the rolls Z Z reach the camsurfaces a and p, the lever-arms K Kare thrown in by one continuousmovement, pushing the matrix-block G, which carries the mold F, be-

fore it up the inclined supports A, until the parts are in the positionshown in Figs. 1 and 2, when the mold and the intermediate plate, I, arein close engagement with each other and with the dischargenozzles e,inreadiness to receive the east. During the time required for theoperation last named the rolls Z Z are traversing the cam-surfaces n pholding the mold, as well as the matrix supporting block G steadily inposition until the process is completed. The plunger D, by which themetal is forced into the mold while the parts are in the position lastdescribed, is actuated by a lever-bar, R, pivoted at one end to ahorizontal bearing, 1", upon the frame, and having a centralconnecting-rod, r, pivoted to the lever and to a stud, r", upon theplunger. To the other end of said lever B is pivotally connected apitman. S, (shown in dotted lines in Fig. 1,) provided with africtionroll, s, at its lower end, and pivoted to one end of aconnecting-link, S, the other end of the latter being pivoted to theframe A. The link S is normallydrawn down by a powerful spring, S,having a turn-buckle, s, or similar device, by which its tension may beadjusted. The roll 8 rides upon a cam, T, upon the main shaft. (Shown indetailin Fig. 12, and in dotted lines in Fig. 1.) This cam raises thelever-bar R slowly, thereby lifting the plunger D, as the shafts L and Lare ad vaneing the mold F toward the discharge-nozzles. "When theseparts are together,the roll .9 rides off the cam T, when the plunger isthrown downward by the tension of the spring S in order to assist in-theretrograde movement of matrix-block G, a springSZis attached to centrallug upon said block and to a post, S, in front of it. gis spring isstretched by the advance of the lock toward the nozzles c, and exerts aconstant tension, whereby the receding movement is rendered more certainand accurate. It should be noticed, also, that wvhen this retrogrademotion begins the mold ed by the following mechanism: The lockingbar Fprojects over the inclined support to-' the locking-plate F ward therock-"shaft L, and has in its edge a square notch, a Upon the inclinedface a' of a bracket, a, upon the frame A is pivotally mounted a plate,V, by a pin, 1), which enters a perforation in the bracket. (See Fig.13.) Upon the upper end of the plate V is formed an arm, V, at about aright angle with the plate, carrying a pin, 1), projecting from itsupper surface and provided with a lug, 'vflprojecting from the outerlongitudinal edge of the arm V, and above its surface. A setscrew, 12,passes through thislug and has its end projecting inwardly therefrom.The surface a of the bracket a" is inclined at such an angle that thesurface of the arm Vlies in a plane parallel with that of thelocking-bar F, and a very little below the latter. Upon the lowerextremity of the plate V is mounted a friction roll, 12*, and the plateis oscillated at intervals upon its pivot-bearing c by a cam, XV, setupon the main shaft behind the cam N, and having a lateral cam-surface,w, by which the lower end of the plate V is thrown outward, and areverse cam-surface upon the opposite side of the cam disk or Segment,by which it is returned to its former position or thrown in ward. As thematrix is moved up to close the mold, the setscrew c,carricd by the lug1)", lies opposite and abutting against the end of At this moment thecam-surface t0 engages with the roll 0 upon the end of the arm V,throwing it out toward the rockshaft L, and consequently swinging theupper end inward. Theset screw if, striking the end of the locking-plateF, drives it toward the opposite side of the maehine,there by causing itto lock the two mold-sections together,in the manneralready described.As already intimated, these parts are timed in their operation sothatthe locking of the mold is accomplished whilethe rolls Z and Z ofthe rock-shafts L and L are riding upon the camsurfaces '11 and 1).respectively. This timing is illustrated in Fig. 13, in which the roll iis shown as approaching the end of the camsurface a, while the roll cofthe plate V hasjust left the cam-surface w, by which the lockingbar Fhas been actuated. As the roll 1 rises to the can1-surfacen the lockedmold is moved up to the discharge-nozzles c, as already described. Thismovement brings the notch a in the locking-plate into engagement withthe pin 1) upon the arm V. The cast being made while these parts are insuch engagement, it is necessary to unlock the mold belore 1t isretracted, in order to allow the removal ofthe casting. This isaccomplished by the reverse movement of the plate V, its lower end beingth row 11 inward, away from the shaft L. by means of a lateralcam-surface, 10*, which is the re verse of the cam-surface t0, and whichis indicated in dotted lines in Fig. 2 asjust about to engage with theroll 1)". By this cam the upper end of the plate V,with its arm V,isthrown outward, and the pin 12 being in engagement with the notch or ofthe locking-bar F the latter is drawn outward with it, and the mold isthereby unlocked, this operation being of fected an instant before therolls 1 t leave the cam surfaces np". and therefore before the retrograde movement of the mold begins. The spring S attached to thematrix-block,serves to draw the latter back and to keep the rolls l 1upon the rock shaft arms in engagement with the cam surfaces. upon whichthey ride throughout the revolution of the shaft. In order. however, toinsure the retraction of the mat rix-block and mold should anyobstruction be met which cannot be overcome by the tensile force of thespring. I employ the following devices: Upon the fly wheel X. whichrevolves outside the rockshaft L, is mounted a bracket. 3, in which isjournaled a roll, 4. (see Fig. 14,) projecting inwardly and having itsshaft at right angles to the main shaft. The roll 4 is so arranged thatit will be brought by the revolution of the fly-wheel into the positionshown in Fig. Zjnst as the roll I is about to leave the can't-surface a"and return to the surface n. At the instant that it leaves the part athe roll 4 abuts against the angular arm I upon the end of therock-shalt L, and in riding over the outer face of said arm forces theroll down from the oam-surfacen", and causes the shaft L to rock in itsbearings. This shaft L, which has its arm carried over the inner face ofthe cam-disk, is operated by a somewhat ditferent device. Acam arm, 5',(shown in detail in Fig. 11,) is rigidly mounted upon the shaft, and,being provided with a laterallyprojecting cam-flange. 6, the latter, asthe arm 5' is swept around, is brought against the back of theactuating-arm upon the rock-shaft at the instant when the roll Z isabout to leave the catn surface 11 and forces the roll down upon thecam-surface p. 1 thus providepositive mechanism for accomplishing theretrac tion of the matrix-block and the mold.

The construction hereinbefore set forth may be varied somewhat. Forexample, the intermediate plate, I, may be dispensed with and aperforated steel plate may be mounted in the copper cap or head E inplace of the dischargenozzles a. This modification in construction isshown in Fig. 9, which presents both aperspective and cross-section, inwhich E indicates the copper cap, and E the steel plate fastened theretoand provided with the notched lugs i i and the curved recesses 13.Orifices i are formed in the plate at the points where thedischarge-nozzles would have been. This plate closes the top of themold, like the plate I; but it is not separable from it between thecasts, and has no intervening isinglass plate. The upper mold-section,F, may be cooled, if desired, by a current of water carried through itby tubes in the usual manner, as shown in Figs. 4 and 5. r

The well in which the plunger operates, as also'the plunger-chamberbelow said well, is heated by the same furnace by which the metal isfused in the main reservoir. The top of the channeled septum E, beingremoved above the influence of said heating mechanism, is

crowned with acap of some metal-as copperwhich is a good conductor ofheat, as already described.

Having thus described my invention, what I claim is- 1. A moldconsisting of the parts F F, the connecting guides or pins, and alocking-bar, F provided with inclined surfaces, said parts combined forjoint operation, as described.

2. As a means of casting separate singleline stereotypes, thecombination of a mold open on the side, a bar or clamp, G, opposite 'theopen side of the mold. and an intermediate sheet provided withparallcl-line matrices. said sheet mounted between the mold and clamp,and adapted, as described, to be advanced to present its linessuccessively opposite the mold, whereby separate line bars are cast froma single matrixsheet.

3. The combination, with a separable mold having its open bottom closedby a movable matrix. of a movable matrix supporting block separablyconnected with said mold, substantially as described.

4. The combinatiomwith the two-part mold, of a matrix-supporting blockconnected with the lower mold'sectionby slotted arms, substant-ially asdescribed.

5. The combination,with the separable mold, of a plate intermediatebetween the top of said mold and the discharge nozzles, said plate beingprovided with notched lugs adapted to enter the mold and withdraw andsustain the casti ng, substantially as described.

6. The combi natiou,with the separable mold, of a plate closing the topof the mold, said plate being provided with openings to admit the moltenmetal, and with segmental recesses intermediate with said openings,whereby standing lugs are formed upon the bottom of the casting,substantially as described.

7. The combination,with a separable mold, of a mat rix-supporting blockhaving a raised strip or rib against which the matrix rests, and pins orstuds near each end thereof, whereby the approach of said block to themold is arrested, substantially as described.

8. The combination, with the two-part separable mold. of pins passingfrom the lower section up through the upper section, said pins beingnotched at their upper ends and engaging with a slotted lockingbarhaving inclined surfaces, whereby said mold is locked and unlocked,substantially as described.

9. The combination, with the two-part separable mold, ofamatrix-supporting block arranged below, the bottom of said mold,connected with its lower section by means of slotted arms having pinswhich bear against the ends of a leaf-spring carried by the lowermold-section, whereby said matrixblock is normally drawn into contactwith the mold, substantially as described.

10. In an automatic mechanism for casting single-line stereotypes, aplate intermediate between the mold and the dischargenozzles by whichthe melted metal is delivered to the mold, said plate having anintervening filament of mica or equivalent material, substantially asdescribed.

11. The combination, with the separable mold, of a matrix composed ofsuccessive strips containing type -impressions, amatrix-supporting'block connected with said mold, and feeding mechanism,substantially as described, whereby the matrix is advanced between eachcast to bring the said strips successively into engagement with the openbottom of the mold, substantially as described.

12. The combination, with the separable mold, of a matrix-supportingblock connected therewith, a matrix intervening between the latter andthe mold, and lips formed upon the mold-sections, which are adapted toengage with the intervals between the matrix strips, substantially asdescribed.

13. The combination, with the reciprocating mold and matrix block, of aweighted matrix supported by a weighted plate having nibs engaging withthe intervals between the matrixstrips, arms rigid upon the frame forpushing the matrix out of engagement with its supporting-plate as themold advances, and a spring supporting said matrix from behind andrestoring its engagement with said supportingplate as the mold recedes,substantially as described.

14. The combination, with the twopart mold having lips upon eachsection, of a matrix-block connected therewith, a spring normallydrawing the mold and matrix-block together, a matrix composed ofsuccessive type-impressed strips intervening between the two, mechanismfor advancing the matrix until it engages with the open bottom of themold, and devices for locking the mold after said engagement iseffected, substantially as described.

15. The combination, with the separable mold, of a matrix-supportingblock connected therewith, lever-arms linked to said block, androck-shafts carrying said arms and actuated by cam-disks upon themain-shaft, which engage with arms upon said rock-shafts, substantiallyas described.

16. The combination, with the lever-arms reciprocating thematrix-supporting block, of rock-shafts carrying said arms, and camdisksupon the main shaft, whereby said rockshafts are actuated, saidcam-disks having each three separate cam-surfaces, by which thelever-arms are caused to advance the matrix into engagement with theopen mold, hold it while the mold is locked, and finally advance themold to the discharge-nozzles, substantially as described.

17. The combination, with the'twopart separable and reciprocating mold,of a lockingwbar having a projecting notched end, an elbowlever pivotedupona bracket on the frame and provided with a locking-lug andset-screw, and an unlocking-pin, said lever being oscillated by a camupon the main shaft, substantially as described.

18. The combination, withthe reciprocating two-part mold carrying a'locking-bar upon the upper mold-section, said bar having a projectingnotched end, of an automatic looking and unlocking lever having an armlying in a plane parallel with the plane of reciprocation of the mold,and being operated by a double reverse cam upon the main shaft,substantially as described.

19. In an automatic machine for casting stereotypes, the combination,with inclined supports, of a separable mold riding thereon, lugs rigidupon said supports and limiting the retrograde movement of said mold, amatrixsupporting block connected with the lower mold-section, and aspring carried by the latter and bearing against pins upon the former,and mechanism for retracting the matrix-support after the mold has beenarrested by said lugs, substantially as described.

20. The combination,with the lower mold-section having notched studsprojecting through perforations in the upper mold-section, of a slottedlockingbarlying upon the upper moldsection and engaging with the notchesin the said studs, a matrix constructed substantially as described,engaging with the open bottom of the separable mold, and mechanism foractuating the locking-bar after said engagement is effected and beforethe mold is moved up to the discharge nozzles, substantially asdescribed.

21. The combination, with the well for containing melted type-metal, ofa plunger-chamber beneath said well and a channeled septum forming oneside of said well and having a cap formed of copper or other metal ofgood conducting quality, substantially as described.

22. The combination, with the channeled septum forming one of the wallsof the metalweil, of a copper cap-piece provided with discharge-nozzlesand a perforated plate mounted thereon by pins sliding in said cap andhav'ing one or more springs acting upon said pins, substantially asdescribed.

23. The combination, with the upper moldsection, of a weighted platepivotally mounted thereon, having nibs which engage with thematrix, anda stop adjustable upon the mold and adapted to arrest the upwardmovement of said plate, substantially as described.

24. The combination, with the plate intermediate between the mold andthe dischargenoz zles, of lugs projecting from the face of said plateand having notches formed therein, the sides of said notches divergingupwardly, substantially as described.

25. The combination, with the reciprocating matrix-block, of lever armslinked thereto, rock-shafts actuating said arms, cams upon the mainshaft, rocking the shafts upon which said arms are mounted, and a rolljournaled in a bracket upon the fly-wheel and brought at each revolutioninto engagement with the arm upon the end of one of the rock-shafts,substantially as described.

26. The combination, with the separable mold having notched studsprojecting from the lower mold-section up through the upper section, ofa Slotted locking plate engaging with said studs, a plate pivoted to themain frame and having a set-screw which comes against the end of thelocking'plate when the plate is oscillated, said plate having one armcarrying a pin engaging with the notched end of the locking-plate, and adouble cam for oscillating the plate in both directions, substantiallyas described.

27. The combination, with the inclined supports A, having stop'lugs A,of the mold F, having pins f, and the matrix-block G, con

nected with the mold by the slotted bars 9 9,

having pins 9 which engagewith a leafspring,f carried by the mold,substantially as described.

28. The matrix-block G, havingslotted arms 20 g g, by which it isconnected tothe mold, and

provided with a longitudinal raised strip, g, having pins 9 9 near eachend, substantially as described. 7

29.In combination with the mold F, the movable lugs 1', provided withnotches i and adapted to enter the mold, substantially as described, forthe purpose of withdrawing the casting.

30. The combination,with the reciprocating mold and matrix-block. oftherock-shafts L L, having arms attheir lower ends which engage with cams Nand P, each having three camsurfaces, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

O'IT. MERGENTHALER. \Vitnesses:

JAMES L. NORRIS,

. J. A. RUTHERFORD.

